Ultrawideband frequency response measurement of high-speed optoelectronic and microwave devices enabled by dual-comb lasers

Xin Zhao

doi:10.1117/12.2602491

9 October 2021 Ultrawideband frequency response measurement of high-speed optoelectronic and microwave devices enabled by dual-comb lasers

Xin Zhao

Author Affiliations +

Proceedings Volume 11902, Real-time Photonic Measurements, Data Management, and Processing VI; 119020Y (2021) https://doi.org/10.1117/12.2602491
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Abstract

With the evolution of communication system toward higher capacity and higher speed, optoelectronic and microwave devices, such as photodiodes and electro-optic modulators, have been developed to operate at tens of or even beyond one hundred gigahertz. Terahertz bands and the corresponding devices are also playing increasingly important roles for future information systems. Traditional measurement methods and instruments, such as vector network analyzers and terahertz time-domain spectroscopy, are expensive, and bulky as well as other performance limitations. On the other hand, optical frequency comb (OFC) is one of the ultrafast optics technologies that has become a powerful and essential tool for numerous high-resolution metrology applications. Recently, dual-comb metrology techniques based on two sets of combs with slightly different comb-tooth spacing have attracted more attention, which have been applied in optical spectroscopy, THz domain metrology, absolute distance measurement and microwave signal characterization. However, the traditional dual-comb systems need two complicated and costly frequency-stabilized ultrafast lasers, and it prevents the application of these attractive schemes to field-deployed applications. In the past few years, there had been many efforts to explore solutions to realize simplified dual-comb systems. One approach is based on the generation of dual combs with high mutual coherence from one mode locked laser. Here, we illustrate the real-time, signal characterization and identification techniques enabled by the simplified dual-comb lasers.

Conference Presentation

Citation Download Citation

Xin Zhao "Ultrawideband frequency response measurement of high-speed optoelectronic and microwave devices enabled by dual-comb lasers", Proc. SPIE 11902, Real-time Photonic Measurements, Data Management, and Processing VI, 119020Y (9 October 2021); https://doi.org/10.1117/12.2602491

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KEYWORDS

Microwave radiation

Optoelectronic devices

Optoelectronics

Metrology

Terahertz spectroscopy

Spectroscopes

Telecommunications

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